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20227 (1997 WS35)
Classification: Main-belt Asteroid          SPK-ID: 2020227
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07671929067118147 2.7436e-08  
a 2.517733064557041 9.0469e-09 au
q 2.324574369744845 6.7994e-08 au
i 6.759455360811909 3.1689e-06 deg
node 55.06566369373058 3.379e-05 deg
peri 192.7792261774626 4.3884e-05 deg
M 45.91215652341491 2.8279e-05 deg
tp 2458814.403526449325
(2019-Nov-26.90352645)
0.00011473 TDB
period 1459.193720165949
4.00
7.8649e-06
2.153e-08
d
yr
n .2467115880673187 1.3297e-09 deg/d
Q 2.710891759369237 9.7409e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2447  
   data-arc span      11320 days (30.99 yr)  
   first obs. used      1989-10-26  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47244  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:04:03  

Additional Information
 Earth MOID = 1.31154 au 
 Jupiter MOID = 2.29478 au 
 T_jup = 3.444 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.4   n/a MPO384928  
diameter diameter 5.833 km 0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.272   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20227 (1997 WS35)          Discovered 1997-Nov-29 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 WS35 = 1989 UM6 = 2000 TQ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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